Pat,
You know I am a big BME Fan...LOL

I have CD'd 5 IMAC's and Have seen probably over 70, 50cc size planes fly. I have never seen anybody having problems with a BME 50, but I can't say that about DA-50. A friend and I both have 28% extra special's His has a DA-50 and Mejzlik 23x8 Mine has a BME 50 and 22x8 mejzlik, both engines were well broken in. Mine out pulled on the upline, and flew faster straight and level..

I havent seen many brisons so I can't comment on them.

PS: I am patiently awaiting a train to Leave LA..I have a BME 110 that is lonley without an Extra 260...LOL

I am not stating that one engine is better than the other just posting my observations so you may draw your own conclusions.

It would be really cool if somebody could host that chart and we could build on it. I can provide Data for the BME 110...LOL